80645278

素因数分解:

$2^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{20071}}^1$

素因数の和:20128

約数の個数: 24

約数和(自身を含む): 144157104

約数和(自身を除く): 63511826

約数列:

[1, 2, 7, 14, 41, 49, 82, 98, 287, 574, 2009, 4018, 20071, 40142, 140497, 280994, 822911, 983479, 1645822, 1966958, 5760377, 11520754, 40322639, 80645278]

約数ペア:

[(1, 80645278), (2, 40322639), (7, 11520754), (14, 5760377), (41, 1966958), (49, 1645822), (82, 983479), (98, 822911), (287, 280994), (574, 140497), (2009, 40142), (4018, 20071)]